2013: Threading a Cave
The Jump: Alexander Polli jumps from a helicopter, reaches 155 miles per hour, and flies through a cave on a mountainside in the Roca Foradada Mountains in Montserrat, Spain. A video of the feat gets over twelve million views on YouTube.
Why It Matters: "It was just a stupendous flight. Jeb (Corliss) was the first to do something like that, but Alex just took it to another level," says Tony Uragallo, a jumper and leading wingsuit crafter.